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97934-09-3

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97934-09-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97934-09-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,3 and 4 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97934-09:
(7*9)+(6*7)+(5*9)+(4*3)+(3*4)+(2*0)+(1*9)=183
183 % 10 = 3
So 97934-09-3 is a valid CAS Registry Number.

97934-09-3Relevant articles and documents

NEW SYNTHESIS OF PYRIDOPYRIMIDINES.I. REACTION OF 6-ALKOXY-5-CYANO-3,4-DIHYDRO-2-PYRIDONES WITH GUANIDINE AND CYANAMIDE

Victory, Pedro,Nomen, Rosa,Colomina, Octavio,Garriga, Miquel,Crespo, Ana

, p. 1135 - 1141 (2007/10/02)

The first step of a new synthesis of pyridopyrimidines, the substitution of the enolic alkoxyl group of 6-alkoxy-5-cyano-3,4-dihydro-2-pyridones (2) by guanidine and cyanamide is described.By this procedure a series of 2,4-diamino-5,6-dihydropyrido

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